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https://issues.apache.org/jira/browse/YARN-11808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gautham Banasandra resolved YARN-11808.
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Fix Version/s: 3.5.0
Target Version/s: 3.5.0
Assignee: Gautham Banasandra
Resolution: Fixed
Merged PR to trunk - https://github.com/apache/hadoop/pull/7583.
> RM memory leak due to Opportunistic container request cancellation at App
> level
> -------------------------------------------------------------------------------
>
> Key: YARN-11808
> URL: https://issues.apache.org/jira/browse/YARN-11808
> Project: Hadoop YARN
> Issue Type: Bug
> Components: RM, yarn
> Reporter: Ashish Ranjan
> Assignee: Gautham Banasandra
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.5.0
>
>
> 2025-02-20T09:07:40,735 INFO [2991] OpportunisticContainerContext: # of
> outstandingOpReqs in ANY (at priority = 68, allocationReqId = 50657, with
> capability = <memory:3072, vCores:2, network: 640Mi> ) : , with location = *
> ) : , numContainers = 0
> 2025-02-20T09:07:40,735 INFO [2991] OpportunisticContainerContext: # of
> outstandingOpReqs in ANY (at priority = 68, allocationReqId = 50658, with
> capability = <memory:3072, vCores:2, network: 640Mi> ) : , with location = *
> ) : , numContainers = 0
> 2025-02-20T09:07:40,735 INFO [2991] OpportunisticContainerContext: # of
> outstandingOpReqs in ANY (at priority = 68, allocationReqId = 50659, with
> capability = <memory:3072, vCores:2, network: 640Mi> ) : , with location = *
> ) : , numContainers = 0
>
>
> numContainers = 0 denote we don't ant allocation of this type. But the map
> object is persisted per application attempt and causing heap issue wastage in
> RM.
>
> In function addToOutstandingReqs * Incase the container request from AM is
> zero we should make sure to clean up the map.
> Multiple issue due to this:
> * Too much unnecessary logging.
> * Memory leak in RM side.
>
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